Weiproteïne tegen vette lever en hart- en vaatziektes*
Uit een kleine Zwitserse studie blijkt dat dagelijkse aanvulling met weiproteïnes door mensen met
overgewicht een goede manier is om op natuurlijke manier de kans op een vette lever en hart- en vaatziektes duidelijk te verkleinen. Vier weken lang kregen de deelnemers, allen met duidelijk overgewicht, drie keer per dag 20 gram weiproteïnes als aanvulling op de gewone maaltijden. In het begin van de studie maakten de in de lever opgeslagen vetten 2-20% van het totale levergewicht uit. Na 4 weken bleek dat die in de lever opgeslagen vetten met wel 21% afgenomen waren. Bloedwaarden
triglyceriden waren met 15% afgenomen en het totaal
cholesterol met 7%. Omdat geen verschil in lichaamsgewicht en lichaamsvet werd gevonden moeten het de weiproteïnes zijn die de verschillen veroorzaakt
hebben en daarom geven, volgens de onderzoekers aanvullingen met weiproteïnes een duidelijk lagere kans op een vette lever, zowel door overgewicht als alcohol, en hart- en vaatziektes bij mensen met overgewicht.
Whey protein fights fatty liver disease and heart disease
New research just published in the journal Clinical Nutrition concludes supplementing the diet with whey protein could be a powerful natural way to reduce the risk of both fatty liver disease and cardiovascular disease.
After just four weeks of adding whey protein to meals, key markers of blood fats in research subjects improved dramatically. That, the team of Swiss scientists noted, means whey protein could reduce the risk of heart disease.
In addition, the whey protein supplementation significantly lowered the amount of fat inside the liver cells of obese women. What makes this finding so important is that it strongly suggests whey protein may be a way to fight liver disease, too.
Although we don't always give the liver much attention, it is critical to purifying the blood by detoxifying harmful chemicals and toxins. People who have extra fat deposited around their middles have been found to be at an elevated risk for a liver harming condition known as non-alcoholic fatty liver disease.
According to the scientists, fatty liver disease is considered to be a component of the metabolic syndrome and closely associated with insulin resistance, impaired glucose tolerance and abnormally high levels of blood lipids including triglycerides and cholesterol.
Murielle Bortolotti from the University of Lausanne, who headed the research, and colleagues gave 11 obese, non-diabetic females diet supplementation with three 20 grams servings of whey protein a day (a total of 60 grams daily) for about a month. At the beginning of the study, the fat inside the livers of the overweight women (technically known as intra-hepatocellular lipid concentrations, or IHCL) ranged between 1.9 and 20.5% of liver volume.
Howver, after four weeks of consuming whey protein, the women's IHCL had plummeted by about 21%, fasting plasma triglycerides decreased by 15% and total plasma cholesterol concentration dropped by over seven percent. Dr. Bortolotti and her co-workers pointed out that the IHCL reduction was not accompanied by any major changes in body weight or body fat mass.
"This therefore indicates that the improved IHCL and plasma triglyceride profiles were to be attributed to an effect of protein rather than to changes in body composition," the research team said in a media statement. They added that their study suggests that a high-protein whey supplemented diet may reduce the risk of both non-alcoholic fatty liver disease as well as cardiovascular disease in obese
patients.
(Juni 2011)
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